Evaluating Expressions

Front

Evaluate m² if m = 7

Back

49

Front

Evaluate x ÷ 4 if x = 80

Back

20

Front

What is the value of x? 3x + 4 when x = -2

Back

-2

Front

Evaluate 3r + 2e; r = 3 & e = 2

Back

13

Front

Simplify the following: -8 + (15 - 3) ÷ 4

Back

-5

Front

What is an expression in mathematics?

Back

A combination of numbers, variables, and operators (like +, -, ×, ÷) that represents a value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting variables with numbers.

Front

What is the order of operations?

Back

The rules that dictate the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - often abbreviated as PEMDAS.

Front

Evaluate 2x + 3 when x = 4

Back

11

Front

What is a variable in mathematics?

Back

A symbol (often a letter) that represents an unknown value.